56628403 has 8 divisors (see below), whose sum is σ = 61196688. Its totient is φ = 52090464.

The previous prime is 56628353. The next prime is 56628409. The reversal of 56628403 is 30482665.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56628403 - 2⁹ = 56627891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56628409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3625 + ... + 11242.

It is an arithmetic number, because the mean of its divisors is an integer number (7649586).

Almost surely, 2^56628403 is an apocalyptic number.

56628403 is a deficient number, since it is larger than the sum of its proper divisors (4568285).

56628403 is a wasteful number, since it uses less digits than its factorization.

56628403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15173.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 56628403 is about 7525.1845824538. The cubic root of 56628403 is about 384.0119783409.

The spelling of 56628403 in words is "fifty-six million, six hundred twenty-eight thousand, four hundred three".